Improvement in looms for weaving pile fabrics



UNITED STATES PATENT QEEIcEo EZEKIEL K. DAVIS, OF NEW YORK, N. Y.

IMPROVEMENT IN LOOMS FORKWEAVING PILE FABRICS.

Specification forming part of Letters Patent No. 86,651, dated February9, 1869.

10 all whom it may concern: Beit known that I, EZEKIEL K. DAVIS, of

. the city, county, and State of New York, have invented and produced anImprovement; in Looms for Weaving Pile Fabrics, of which the followingis a full, clear, and exact description, reference being had to theaccompanying drawings making part of this specifcation: y

This invention relates to a mechanism or device for working the wires inweaving pile fabrics, in which the wires are drawn from the cloth. andinserted in the warp-shed in rotation 5 also, to an arrangement of theshuttlebox on one side of the loom, whereby it is caused to slide uponthe `lay of the loom instead of being rmly secured to the lay, as inordinary looms; and, also, to an improved arrangement for working thecams that Voperate the heddle-fraines of the several warps.

Figure l is a general plan of the improvements and partsof the loom towhich they are attached. Fig. 2 is a front elevation of the same. Fig. 3is an end elevation. Fig. 4 is a side elevation of the device forsecuring the wires during the process of drawing and inserting. Fig. 5is a plan of section of said device. Fig. 6 is an end elevation of thesame. Fig. 7 is a plan, showing the relative positions of slidingshuttle-box, slotted bar, and wirebox `when the wire is being drawn, andthe lay at the extreme forward point of its beat. Fig. 8 is a plan ofthe relative positions of sliding shuttle-box, slotted bar, andwire-boxl when the lay is thrown back and the wire being inserted in theshed.

Similar letters of reference` in the various figures indicate likeparts.

The parts of the loom shown in thc drawings, and herein speciiied, formno part of my invention, but are simply shown. to exhibit the connectionof the improvement with the body of the loom.

The term wire-motion is commonly applied to the mechanism employed fordrawing and inserting the wires; and when it occurs in thisspeciiication will have that application,

y A is a slotted bar in which the wires slide, and by which they areguided during the process of drawing and inserting. The slotted bar A issupported by the arms a a, whichv are attached to the rocker-shaft'b,which has suitable bearings on the frame of the loom. rlhe motionrequired to transfer the wire, after it is drawn, from the line of thecloth to the proper position for entering the shed is imparted to theslotted bar A by means of the cam B acting upon the lever c, which issecured at one end to the rocker-shaftb.. The spiral spring d serves tohold the rollerl of the lcver c in contact with the face of the cam Bduring regular action, and, in case of any obstruction to the backwardmotion of the slotted bar A, permits said bar to remain forward, andprevents breakage. The cam B is of such construction as to allow the barA to remain stationary while the wire is being drawn from the cloth.This cam is secured to one end of shaft e, which is operated by suitablegearing connecting itwith the driving pulley or gear. C U is a steelplate arranged to slide in and traverse the full length of the slottedbar A, and suports the hook f, spring g, lever h, spring t', and platej, which securely hold the wire during the process of drawin g at.inserting. A section of the wire with a su able head, lr', is shown inFig. 4, and it will be seen that the hook f, held in position by thespring g, secures the wire for the purpose of drawing, while the leverIt held by the spring t' presses against the lower edge of the wireheadla and holds it in its proper position in the slotted bar A. When thewire is being driven into the shed the plate j presses against the backof the wire head k for the purpose of driving. The traverse-motionrequired to draw and insert the wires is imparted to the steel plate C Cand its connections by means of the traverse-cam D acting upon the leverE, which transmits the motion to the plate C C through the arm F, oneend of which is secured to the lever E, the other to the plate C C. Inorder to support theA end of the wire, when it is drawn, a pin, l, isinserted in the slotted bar A near the end next to the body of the loom,as this pin, should it remain at all times inthe bar, would interferewith the passage of the plate C .Cpwhen it isdriven up to insert thewire. It is secured to one end of the long spring m on the side of thebar, and as the plate C C is moved forward to drive the wire a pin orstud, n, attached to said plate, comes in contact with the spring m at apoint shown yat o in Figs. 1, 2, 7, and 8,

presses it out sufficiently to remove the pin Z from the slot 'in thebar A, and allows the plate to complete its forward motion withoutobstruction. When the plate C C is traversing backward, and drawing thewire, the stud a relieves the spring m at the point o, before mentioned,and the piu L enters the slot in the bar Ain time to support the end ofthe wire as it comes from the cloth. The positions of the spring m andpin l, both when the plate C C and its connections are in position toseize a wire, and when the wireis being Ydriven into-the shed, arerespectively shown in Figs. 7 and 8. p p, shown in Figs. l, 7, and 8,represent the wires in the cloth or pile. G is the wire-box, so called,which holds the wire-heads in a proper position. S is av slot in the topof the wirebox Gr, into which the hook f of the plate C C drops to siezea wire as the bar A is brought forward for the purpose of receiving anddrawing the Wire. The plate j of the steelplate C G, besides serving topush the wire in inserting, also presses against the heads ofthe wiresin the box G when the bar A is returning from the line of inserting tothat of drawing, and keeps them true, and in proper position to beseized in turn by the hook f. The position of the plate to accomplishthe object is .partially shown in Fig. l. When the wire is driven by theplate C C and its connections as far into the shed as is required, itshead is relieved from the clutch of the hook j and lever h by theirbeing pressed against an attachment to the wirebox, and in the return ofthe bar A to the line of drawing they respectively pass over and underthe wire-box G until they arrive at the slot s, Where they seize uponthe wirehead presented there, and hold it in the manner shown in Fig. 4as long as is required to draw and insert the wire.

In the proper working of improved wire motions for pile fabrics it hasbeen considered necessary to detach the shuttle-box from the lay on theside of the loorn that the wires are drawn and inserted, in order togive the wire motion room for its operation.

A part of my improvement consists in so arranging the shuttle-box H asto slide upon the lay, so that when it is necessary to throw and receivethe shuttle the box is in line with the race of the lay, the same asthough v Stard its motion while the layn goes forwardl to .Y Y

complete its beat, and as the lay begins to recede, gradually increasesthe backward motion ofthe box until it is again in line with the race ofthe loom, when it works with the lay the same as though it were securedto it, until it again arrives at the point of retarding in the forwardbeat.

The common method of operating cams for working the heddle-frames forthe several -warps of pile-fabrics has been to secure the cams all toone shaft, and the different motions required are attained by the-construction of the cams, either double or single, as the caserequires.

My improvement consists in working the ne Warp or cloth-making heddlesby cams K L, driven by the compound bevel-gears M N O R, the cams K Lbeing secured to the gear O, which revolves on the shaft e in anopposite direction to that of the shaft e, making one revolution to twoof said shaft.

The cams P Q which operate the pile and stuffing warps are secured tothe main shaft e, and thereby make two revolutions to one of the cams KL, and revolve in an opposite direction to said cams.

What claim as my invention, and desire to secure by Letters Patent, is-

1. The slotted bar A, in combination with the plate C C, hook f, springg, and spring i, lever X, and plate j, constructed and arrangedsubstantially as described, and for the purpose set forth. l

2. The pin b, spring m, and stud u, arranged and combined with theslotted bar A, for the purpose of supporting the wire while in processof drawing and inserting, substantially as described, and for thepurpose specified.

3. The sliding shuttle-box H, combined with arms X X, rocker-shaft t,lever u, and campath J, substantially as described, for operating theshuttle-box.

4. The bevel-gears M N O R, arranged substantially as hereinbeforedescribed, for the purpose specified, of operating the heddlecams, asset forth. y

EZEKIEL K. DAVIS.

v Witnesses:

GEORGE G. WEIGHT, THOMAS A. CAMPBELL.

